pciio.c

来自「EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是」· C语言 代码 · 共 1,868 行 · 第 1/4 页

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  if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
    return EFI_INVALID_PARAMETER;
  }

  Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeMem, Width, 1, &Offset);
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  if (Width > EfiPciIoWidthUint64) {
    return EFI_INVALID_PARAMETER;
  }

  Status = PciIoDevice->PciRootBridgeIo->PollMem (
                                          PciIoDevice->PciRootBridgeIo,
                                          (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                          Offset,
                                          Mask,
                                          Value,
                                          Delay,
                                          Result
                                          );
  return Status;
}

EFI_STATUS
EFIAPI
PciIoPollIo (
  IN  EFI_PCI_IO_PROTOCOL        *This,
  IN  EFI_PCI_IO_PROTOCOL_WIDTH  Width,
  IN  UINT8                      BarIndex,
  IN  UINT64                     Offset,
  IN  UINT64                     Mask,
  IN  UINT64                     Value,
  IN  UINT64                     Delay,
  OUT UINT64                     *Result
  )
/*++

Routine Description:

  Poll PCI IO

Arguments:

Returns:

  None

--*/
{
  EFI_STATUS    Status;
  PCI_IO_DEVICE *PciIoDevice;

  PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);

  if (Width < 0 || Width > EfiPciIoWidthUint64) {
    return EFI_INVALID_PARAMETER;
  }

  Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeIo, Width, 1, &Offset);
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Status = PciIoDevice->PciRootBridgeIo->PollIo (
                                          PciIoDevice->PciRootBridgeIo,
                                          (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                          Offset,
                                          Mask,
                                          Value,
                                          Delay,
                                          Result
                                          );

  return Status;
}

EFI_STATUS
EFIAPI
PciIoMemRead (
  IN     EFI_PCI_IO_PROTOCOL        *This,
  IN     EFI_PCI_IO_PROTOCOL_WIDTH  Width,
  IN     UINT8                      BarIndex,
  IN     UINT64                     Offset,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:

  Performs a PCI Memory Read Cycle

Arguments:

Returns:

  None

--*/
{
  EFI_STATUS    Status;
  PCI_IO_DEVICE *PciIoDevice;

  if (Buffer == NULL){
	  return EFI_INVALID_PARAMETER;
  }

  PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);

  if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
    return EFI_INVALID_PARAMETER;
  }

  Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeMem, Width, Count, &Offset);
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Status = PciIoDevice->PciRootBridgeIo->Mem.Read (
                                              PciIoDevice->PciRootBridgeIo,
                                              (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                              Offset,
                                              Count,
                                              Buffer
                                              );

  return Status;
}

EFI_STATUS
EFIAPI
PciIoMemWrite (
  IN     EFI_PCI_IO_PROTOCOL        *This,
  IN     EFI_PCI_IO_PROTOCOL_WIDTH  Width,
  IN     UINT8                      BarIndex,
  IN     UINT64                     Offset,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:

  Performs a PCI Memory Write Cycle

Arguments:

Returns:

  None

--*/
{
  EFI_STATUS    Status;
  PCI_IO_DEVICE *PciIoDevice;

  if (Buffer == NULL){
	  return EFI_INVALID_PARAMETER;
  }
  
  PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);

  if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
    return EFI_INVALID_PARAMETER;
  }

  Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeMem, Width, Count, &Offset);
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Status = PciIoDevice->PciRootBridgeIo->Mem.Write (
                                              PciIoDevice->PciRootBridgeIo,
                                              (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                              Offset,
                                              Count,
                                              Buffer
                                              );

  return Status;
}

EFI_STATUS
EFIAPI
PciIoIoRead (
  IN     EFI_PCI_IO_PROTOCOL        *This,
  IN     EFI_PCI_IO_PROTOCOL_WIDTH  Width,
  IN     UINT8                      BarIndex,
  IN     UINT64                     Offset,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:

  Performs a PCI I/O Read Cycle

Arguments:

Returns:

  None

--*/
{
  EFI_STATUS    Status;
  PCI_IO_DEVICE *PciIoDevice;

  if (Buffer == NULL){
	  return EFI_INVALID_PARAMETER;
  }

  PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);

  if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
    return EFI_INVALID_PARAMETER;
  }

  Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeIo, Width, Count, &Offset);
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Status = PciIoDevice->PciRootBridgeIo->Io.Read (
                                              PciIoDevice->PciRootBridgeIo,
                                              (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                              Offset,
                                              Count,
                                              Buffer
                                              );

  return Status;
}

EFI_STATUS
EFIAPI
PciIoIoWrite (
  IN     EFI_PCI_IO_PROTOCOL        *This,
  IN     EFI_PCI_IO_PROTOCOL_WIDTH  Width,
  IN     UINT8                      BarIndex,
  IN     UINT64                     Offset,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:

  Performs a PCI I/O Write Cycle

Arguments:

Returns:

  None

--*/
{
  EFI_STATUS    Status;
  PCI_IO_DEVICE *PciIoDevice;

  if (Buffer == NULL){
	  return EFI_INVALID_PARAMETER;
  }

  PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);

  if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
    return EFI_INVALID_PARAMETER;
  }

  Status = PciIoVerifyBarAccess (PciIoDevice, BarIndex, PciBarTypeIo, Width, Count, &Offset);
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Status = PciIoDevice->PciRootBridgeIo->Io.Write (
                                              PciIoDevice->PciRootBridgeIo,
                                              (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                              Offset,
                                              Count,
                                              Buffer
                                              );

  return Status;
}

EFI_STATUS
EFIAPI
PciIoConfigRead (
  IN     EFI_PCI_IO_PROTOCOL        *This,
  IN     EFI_PCI_IO_PROTOCOL_WIDTH  Width,
  IN     UINT32                     Offset,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:

  Performs a PCI Configuration Read Cycle

Arguments:

Returns:

  None

--*/
{
  EFI_STATUS    Status;
  PCI_IO_DEVICE *PciIoDevice;
  UINT64        Address;

  PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);

  Address     = Offset;
  Status      = PciIoVerifyConfigAccess (PciIoDevice, Width, Count, &Address);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Status = PciIoDevice->PciRootBridgeIo->Pci.Read (
                                              PciIoDevice->PciRootBridgeIo,
                                              (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                              Address,
                                              Count,
                                              Buffer
                                              );

  return Status;
}

EFI_STATUS
EFIAPI
PciIoConfigWrite (
  IN     EFI_PCI_IO_PROTOCOL        *This,
  IN     EFI_PCI_IO_PROTOCOL_WIDTH  Width,
  IN     UINT32                     Offset,
  IN     UINTN                      Count,
  IN OUT VOID                       *Buffer
  )
/*++

Routine Description:

  Performs a PCI Configuration Write Cycle

Arguments:

Returns:

  None

--*/
{
  EFI_STATUS    Status;
  PCI_IO_DEVICE *PciIoDevice;
  UINT64        Address;

  PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);

  Address     = Offset;
  Status      = PciIoVerifyConfigAccess (PciIoDevice, Width, Count, &Address);
  if (EFI_ERROR (Status)) {
    return Status;
  }

  Status = PciIoDevice->PciRootBridgeIo->Pci.Write (
                                              PciIoDevice->PciRootBridgeIo,
                                              (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                              Address,
                                              Count,
                                              Buffer
                                              );

  return Status;
}

EFI_STATUS
EFIAPI
PciIoCopyMem (
  IN EFI_PCI_IO_PROTOCOL              *This,
  IN     EFI_PCI_IO_PROTOCOL_WIDTH    Width,
  IN     UINT8                        DestBarIndex,
  IN     UINT64                       DestOffset,
  IN     UINT8                        SrcBarIndex,
  IN     UINT64                       SrcOffset,
  IN     UINTN                        Count
  )
/*++

Routine Description:

  Copy PCI Memory

Arguments:

Returns:

  None

--*/
{
  EFI_STATUS    Status;
  PCI_IO_DEVICE *PciIoDevice;

  PciIoDevice = PCI_IO_DEVICE_FROM_PCI_IO_THIS (This);

  if (Width < 0 || Width >= EfiPciIoWidthMaximum) {
    return EFI_INVALID_PARAMETER;
  }

  if (Width == EfiPciIoWidthFifoUint8  ||
      Width == EfiPciIoWidthFifoUint16 ||
      Width == EfiPciIoWidthFifoUint32 ||
      Width == EfiPciIoWidthFifoUint64 ||
      Width == EfiPciIoWidthFillUint8  ||
      Width == EfiPciIoWidthFillUint16 ||
      Width == EfiPciIoWidthFillUint32 ||
      Width == EfiPciIoWidthFillUint64) {
    return EFI_INVALID_PARAMETER;
  }

  Status = PciIoVerifyBarAccess (PciIoDevice, DestBarIndex, PciBarTypeMem, Width, Count, &DestOffset);
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Status = PciIoVerifyBarAccess (PciIoDevice, SrcBarIndex, PciBarTypeMem, Width, Count, &SrcOffset);
  if (EFI_ERROR (Status)) {
    return EFI_UNSUPPORTED;
  }

  Status = PciIoDevice->PciRootBridgeIo->CopyMem (
                                          PciIoDevice->PciRootBridgeIo,
                                          (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
                                          DestOffset,
                                          SrcOffset,
                                          Count
                                          );

  return Status;
}

EFI_STATUS
EFIAPI
PciIoMap (
  IN     EFI_PCI_IO_PROTOCOL            *This,
  IN     EFI_PCI_IO_PROTOCOL_OPERATION  Operation,
  IN     VOID                           *HostAddress,
  IN OUT UINTN                          *NumberOfBytes,
  OUT    EFI_PHYSICAL_ADDRESS           *DeviceAddress,
  OUT    VOID                           **Mapping
  )
/*++

Routine Description:

  Maps a memory region for DMA

Arguments:

Returns:
1234

pciio.c - 源码说明

本页面展示了「EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是EFI BIOS源代码中的与平台无关部分的代码」中的 pciio.c 源码文件，采用 C语言 编程语言编写，共 1,868 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

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